Subvariants BA.4 and BA.5 are more transmissible, and early evidence shows both are capable of evading immune responses from previous infection as well as current COVID-19 vaccines.
While they are not as deadly, they spread more quickly. And with more people infected, the chances of new mutations and variants cropping up increase. What’s more, more infections mean a higher chance of people developing
FILE -Transmission electron micrograph of SARS-CoV-2 virus particles within endosomes of a heavily infected nasal Olfactory Epithelial Cell. COVID-19 infects people of all ages but so far, the people who are the most vulnerable to BA.4 and BA.5 remain similar to previous strains: the elderly and the immunocompromised. The two new subvariants are not as deadly, so why are we so concerned about them? Health officials have said they are the worst variants we’ve seen so far in this pandemic.
FILE -Travelers wait to board their flight at a United gate in the west terminal on May 23, 2022, in Austin, Texas.
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